Being a preschool and Day Care I thought this would give us more bang for our buck. Wrong! It takes 3-4 to make a gallon. (It's cheaper to buy it premixed gallon of paint)Also I found that every color mixes differently. The directions say equal parts powder to water but I have found I need to play with it and start with half that amount of water to avoid making it to thin. Mixing this fine powder can be very messy too, it tends to fly everywhere no matter how careful I am transferring it to the gallon with a funnel.